tailieunhanh - Combating NOx from refinery sources using SCR by Hans Jensen-Holm and Peter Lindenhoff

Refinery SCR applications SCR for steam cracking and reformer furnaces Chromium deactivation mechanism SCR DeNOx in fluid catalytic cracking units (FCCU) SCR design issues ABS condensation considerations Catalyst selection Catalyst cleaning | HALDOR TOPS0E n Combating NOx from refinery sources using SCR by Hans Jensen-Holm Technology Manager and Peter Lindenhoff General Manager Air Pollution Control Catalyst Technology Haldor Tops0e A S HALDOR TOPSDE IT Combating NOx from refinery sources using SCR Page 2 of 31 List of contents 1 Summary 3 2 Introduction 4 3 The SCR DeNOx process and catalyst 5 The SCR process 5 The SCR catalyst 7 4 Refinery SCR applications 10 SCR for steam cracking and reformer furnaces 10 Chromium deactivation mechanism 11 SCR DeNOx in fluid catalytic cracking units FCCU 14 SCR design issues 14 ABS condensation considerations 15 Catalyst selection 17 Catalyst cleaning 17 5 Industrial experience 17 Chevron Phillips Cedar Bayou Texas USA ethylene plant 17 NOx reduction performance 19 Chromium accumulation in the catalyst 19 Fluid catalytic cracking units 21 Shell Deer Park Refinery Texas USA 21 ABS considerations 23 Ammonia mixing and SCR lay-out 23 Performance 24 Catalyst cleaning 25 Operation of the SCR 26 CITGO Petroleum Lemont Refinery Illinois USA 26 Design considerations 27 Operational performance 28 6 Conclusions 30 7 References 31 Information contained herein is confidential it may not be used for any purpose other than for which it has been issued and may not be used by or disclosed to third parties without written approval of Haldor Tops0e A S. RESEARCH I TECHNOLOGY I CATALYSTS HALDOR TOPS0E n Combating NOx from refinery sources using SCR Page 3 of 31 1 Summary The emission of nitrogen oxides or NOx is a major global pollution problem. The damaging effect of nitrogen oxides on health and environment is substantial. NOx contributes to acid rain resulting in deforestation and destruction of coastal and freshwater life. NOx further reacts in the atmosphere to form ground-level ozone bringing about the health-threatening yellowish smog in urban areas.

• Hoá dầu
• Air Emissions
• Petroleum
• Refinery
• Industrial experience
• Chevron Phillips
• Cedar Bayou
• Air pollution
• Carbon emissions
• Economic growth
• Agricultural land
• Air pollution in Indonesia
• Aldehyde emissions from particleboard
• Medium density fiberboard products
• Aldehyde emissions
• Density fiberboard products
• Indoor air quality problems resulting
• Quality problems resulting
• Guidance
• gas industry
• paper manufactured
• environment
• steam boilers
• process furnaces
• process heaters
• compressor engines
• Government intends
• improve access to medicines
• publishing patient
• Cellular Interactions
• Lentiviral Accessory
• Distinct Steps
• assessment of air source
• water source assessment
• land contamination
• technical inventory
• environmental controls
• Terpene emissions
• Particleboard and medium
• During the past several decades
• Air quality in homes
• Past several decades
• Greenhouse gas emissions
• Rice straw burning
• Agricultural production
• Animal husbandry
• Summer autumn season
• Microbiological organic compost
• NAEI Point Source Database
• Regional Data
• Air Quality Pollutants
• Mapping Grids
• UK Ammonia Emissions
• Public and Pediatrics
• Paediatrics
• People and Politicians
• Emerging Risks
• Xenotropic Murine
• Leukemia Virus Related
• Medieval Experiences
• Pollutant Gas Features
• Particulate Features
• Anthropogenic Emissions
• Carbon Monoxide
• Air Quality
• Ecological Impacts
• Trace Metals
• Atmospheric Emissions
• Complex Terrain
• Atmospheric Sulfur
• Carolina
• Pennsylvania
• Virginia
• West Virginia
• Philadelphia
• pollution control
• priority substances
• reduce emissions
• Improving environmental
• damaging activities
• Emission Inventory
• Intimate Relationship
• Stomatal Responses
• Stress and Air Humidity
• Genetics and Adaptation
• Plant Genes
• Abiotic Stress
• Water Quality
• Further Reading
• Internet Resources
• Websurfer’s Challenge
• Emissions Caps
• Psychological Factors
• Conditioning Health
• Related Quality
• Elderly Women
• Urinary Incontinence
• Long Term Care
• SRO Family
• Characterization
• Plant Antioxidative
• Heavy Metal Toxicity
• Genetic and Molecular
• Report
• Quadrennial
• Defense
• Review
• Continuous Improvement
• Understanding Results
• Improvement Strategies
• Submitting the Template
• successful transition
• appropriate referrals
• Exhaust emissions
• Engine testing
• Measurement of fuel
• Combustion air
• Thermal efficiency
• Measurement of heat
• Tạp chí khoa học
• Origin of NOx emission
• Preserve global environment
• Eduction of pollutant emissions